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TPS23758: POE静态雷击保护

Part Number: TPS23758

用TPS23758做13W 12V 1A 应用,PD功率输入用的是差分线抽头,目前这边有个要求,要在整个板不供电也不过信号(也就是输入RJ45不接网线)的时候,从输入一对差分线和EARTH之间注入2KV 10/700uS 的共模浪涌信号,发现会把PD部分的100V 0.36Ω的MOS打坏(不是flyback的MOS),这一对差分线经过网络变压器抽头后对地是有SMCJ58CA的双向TVS做保护的,但是还是打坏了,这种静态的雷击保护需要对PD的MOS再做什么防护才能解决呢